jythonJob.getIncoming_message_value().getType(),
new JythonIncomingMessageValueFactory(), interpreter));
types.setOutgoingMessageValueClass(
initValueType(conf, GraphType.OUTGOING_MESSAGE_VALUE,
jythonJob.getOutgoing_message_value().getType(),
new JythonOutgoingMessageValueFactory(), interpreter));
types.writeTo(conf);
}